{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "required": [
    "type", "options"
  ],
  "properties": {
    "type": { "enum": ["custom"] },
    "label": { "type": "string" },
    "options": { "$ref": "custom_variable_options.json" }
  },
  "additionalProperties": false
}
